The aim of this paper is to show the causal relationship between the historical facts of the French Revolution and the philosophical thoughts of the 18th and the 19th century. The observation of this relationship is based on the philosophical concepts of Voltaire, Rousseau and Hegel.In essence, Voltaire's ideas of royalism, deism and tolerance were noticeablein the first phase of the Revolution,that is after the adoption of the first constitution of 1791, when French citizens were divided introactive and passive. The sanctioning of the constitution of 1791 actualized his idea that „men are equal as men, but it no way can they be equal with regards to their material or social status“.In other words, all citizens became „free“, while some of them(based on their property) had the right to vote (active), others did not (passive). Voltaire tried to proclaim the idea of religious tolerance in the context of economic development, giving the analogous example of England. Rousseau's concept of society was accomplished after the second French constitution of 1793, when all people, at least nominally, became equal before the law, regardless of their social or property census.This kind of a relationship between citizens and the law was presented in the Declaration of the Rights of Man and Citizen. The totalitarity of the idea of the necessity of freedom for all French citizens resulted in terror. The Social Contract was used by representatives of the Revolution in order to freely implement their own concepts of arranging the newly established Republic. Hegel's understanding of the French Revolution was based on dialectics and his understanding of the state and freedom. Thus, on the one hand, the Revolution was perceived as the synthesizing moment in the historical process after which the state became the highest level of the progress of the consciousness of freedom. On the other hand, Hegel also recognized the paradox of the Revolution in which the road towards freedom includes the guillotine.